baber/WOPTO huggingface dataset:
Patent GB-471366-A (GB)
Abstract: 471,366. Photographic emulsions. KODAK, Ltd. March 2, 1936, No. 6329. Convention date, March 2, 1935. [Class 98 (ii)] A method of producing a rapid photographic printing-out emulsion includes the step of dissolving silver hydroxide in an organic base and then precipitating a silver compound therefrom. A precipitate of silver hydroxide formed by the addition of ammonium hydroxide to silver nitrate solution is redissolved in pyridine, and a solution of half of the gelatine is added. A solution of the other half of the gelatine is mixed with a solution of potassium bromide and iodide, and the two solutions mixed at 60‹ C. The sensitivity may be increased by the addition of silver nitrate and sodium nitrite. Other suitable organic bases are methylamine, benzylamine, naphthylamine, triethanolamine, piperidine, quinoline, acridine, picoline and acetamide. Either potassium bromide or chloride or both, with or without potassium iodide, may be used as halides. In a modification, the gelatine is replaced by a solution of cellulose acetate phthalate in acetone, ethyl alcohol, 2-ethoxy-ethylacetate or 2-methoxyethyl-acetate and the halides by bromacetic acid or bromoesters. The image may be protected by affixing to the surface of the layer a yellow, green or red transparent sheet of gelatine or cellulose acetate.
Patent GB-1075676-A (GB)
Title: Method of transferring a dumper skip from the dumper to the ground and apparatus for use therein
IPC: B60P1/06
Filed: 1963-12-02
Abstract: 1,075,676. Removing skips from dumper vehicles. L. B. THWAITES. Nov. 30, 1964 [Dec. 2, 1963], No. 47389/63. Heading B8H. [Also in Division B7] To remove a skip 17 from a dumper vehicle 16 a stand 24 is clipped on to the rear wall 30 and the skip is tipped into the position shown in Fig. 2 after check chains 23 have been disconnected. The links 21 are now disconnected and the skip allowed to tip forwards until a plate 25 of the stand rests on the ground and a spike 26 is embedded. The skin may be readily re-attached by the reverse procedure.
Patent GB-988335-A (GB)
Title: Polymerisation process
Inventor: BARTON JOHN MICHAEL
IPC: C08G2/00
Filed: 1962-12-15
Abstract: Trioxane is polymerized or copolymerized in the presence of a catalyst which comprises ferric acetylacetonate and an organic acid halide, e.g. CH3COCl, CH3COBr or C6H5COCl. Polymerization may be effected continuously or batchwise with or without the use of pressure apparatus. Polymerization may be carried out at temperatures from - 20 DEG  to 120 DEG  C.  The trioxane may be polymerized in bulk, in solution or as a dispersion in an inert liquid. Cyclohexane and 1:2-dichlorethane are mentioned as suitable solvents.  Examples are given of solution polymerization.  The polymers may be esterified.ALSO:A polymerization catalyst comprises ferric acteylacetonate in combination with an organic acid halide.  The catalyst may be used per se or as a solution in an inert solvent. Specified halides are CH3COCl, CH3COBr and C6H5COCl.
Patent GB-1475050-A (GB)
Title: Method for catalyzing a fuel cell electrode and an electrode so produced
IPC: H01M4/86
Filed: 1975-11-19
Abstract: 1475050 Catalysing fuel cell electrode UNITED TECHNOLOGIES CORP 19 Nov 1975 [18 Dec 1974] 47616/75 Heading H1B A porous, conducting-particle, hydrophobicbonded, substrate-supported electrode is catalysed by contacting the conducting-particle, hydrophobic-bonded portion of said electrode with an electolyte, applying a non-alternating electrical potential across the electrode between the substrate and the electrolyte, the potential being sufficient to increase the rate at which the electrolyte enters and fills the porous conducting particles, introducing a soluble catalystcontaining compound into the electrolyte within the electrode structure, and depositing insoluble catalyst from solution on to the conducting particles. The substrate may be carbon "paper" of C or graphite fibre, and may be coated with a thin layer of hydrophobe, e.g. PTFE; this faces the gas side in a fuel cell. The conductive particles may be boron carbide, Ta, or Ni but are preferably carbon black or graphite; these are bonded together preferably with PTFE, but fluorinated ethylene propylene or polystyrene may also be used. The substrate with conductive particles bonded thereto is placed, particle side down in an electrolyte e.g. H 3 PO 4 , which does not contact the substrate; a potential of 0À9-1À6V at 1-2 mA/cm<SP>2</SP> is applied, and this enhances wetting of the particles. Then, a blotter soaked in chloroplatinic acid solution is held adjacent the particles, and the acid migrates into the electrolyte in the electrode structure; treatment at 49-204 C. with H 2  reduces this to Pt metal catalyst. The catalyst compound may be dissolved in a mixture of 2 liquids whose ability to wet the particles varies with composition; the mixture may be water/alcohol, so that on heating and evaporating of the alcohol, the remaining water solution becomes non-wetting to the hydrophobic binder, thus depositing all the catalyst on the conductive particles and providing higher efficiency in use. The conductive substrate may alternatively be a metal screen.
Patent GB-1326223-A (GB)
IPC: H02P8/00
Filed: 1970-10-07
Abstract: 1326223 Programmed control FUJITSU Ltd 7 Oct 1970 [24 Oct 1969] 47647/70 Heading G3N A machine M is moved by an hydraulic motor HM, controlled by an electric pulse motor EPMI responsive to pulses from a numerical control apparatus NC. Error within the machine drive is compensated by an electric pulse motor EMP2 rotating the housing of the motor in response to compensating pulses C'. The command pulses C are fed to a deviation setting circuit DS wherein are generated compensation pulses di, proportional to the command frequency and representing the theoretical steady state duration of the drive. The pulses di are fed to a summing point A1 are added to the command pulses C. A linear scale measuring device LS determines the actual position of the machine as pulses equivalent to C + C' + dm + p + c where dm is the actual steady state deviation, p its index error and e back lash. There pulses are subtracted from the pulses C + di to produce pulses di - (C' + dm + p + c) from which pulses C' are produced to drive the motor EPM2 so that the total tends to zero.
Patent GB-1402166-A (GB)
Title: Apparatus for filtering solids from gases and a filter cleaning process
IPC: B01D46/04
Filed: 1972-10-16
Abstract: 1402166 Cleaning air filter apparatus AMERICAN AIR FILTER CO INC 16 Oct 1972 [18 Oct 1971] 47669/72 Heading BIT A filter for removing dust from air comprises a housing 1 with inlet 3 and outlet 11, the latter connecting with the interiors of inward flow filter tubes 7 suspended from plate 14. The tubes are formed of fiexible fabric, e.g. nylon, and are internally supported by coiled wire helices 13. The filter tubes are periodically cleaned by directing opposed pulses of compressed gas from nozzles 15 mounted at both ends of the tubes. The opposed pudses may be simultaneous so that the pulses collide at the mid-points of the tubes or the pulses may be times so as to obtain a series of collisions at spaced intervals along the axes of the tubes. Separated dust falls into hopper 21 and is removed by discharge means 22, e.g. a rotary gas lock feeder. Deflector elements 9 (Fig 3) are mounted at one or both ends of the tubes in order to obtain annular .pulses of gas inside the tubes.
Patent GB-1530627-A (GB)
Title: Device for producing aesthetic effects
IPC: B44C5/00
Filed: 1975-11-19
Abstract: 1530627 Display devices A EWALD 19 Nov 1975 [25 Nov 1974] 47672/75 Heading G5C A device for producing changing shapes and colours consists of one or more transparent or translucent vessels 1 containing at least three immiscible liquids such as A, B, or C of different densities, the liquids being intermingled by manipulation of the vessels or by controlled pumping. The liquids are of the following kinds in ascending densities:- A is liquid paraffin and/or silicone oil and/or napthene and/or hexachlorobutadiene, B is water or an ether such as propane-trioxyethylether or a polyether, and C is esters with chemically bound phosphorus and/or chemically bound halogen, preferably chlorine, an ester of pthalic acid, and more particularly dibutoxybutyl phthalate, a carbonic acid ester, particularly propanediol carbonate, or ethanediolmonophenyl ethers, or etrahydrothiophene-1,1-dioxide. Vessels 1 may be interconnected in a closed pumping circuit, Fig. 9b, or liquids A, B, and C may be separately pumped through pipes 14 to provide jets 15, Fig. 11. Again, hollow discs 31 containing the liquids, and discs 32 containing the liquids and balls 33 of different densities, are mounted on a rotating larger disc 29. Separately rotating hollow discs are mentioned. The vessels 1 may be illumined by continuous or intermittent, including stroboscopic light sources. Each liquid may be dyed, with A being yellow, B red-brown, and C green, for example.
Patent GB-1109610-A (GB)
Title: Process for the manufacture of monovinylacetylene
IPC: C07C2/38
Filed: 1966-10-26
Abstract: Monovinylacetylene is produced by introducing acetylene into a catalyst solution consisting of cuprous chloride in aqueous hydrochloric acid and containing a complex former as an additional component, at a temperature between 40 DEG  and 100 DEG  C. and an acetylene gas pressure between 0.01 and 10 atmospheres gauge, simultaneously introducing into the catalyst solution an inert organic solvent which travels through the solution in vapour form and continuously extracts and expels monovinylacetylene from the solution, and subsequently recovering the monvinylacetylene from the mixed vapours by conventional condensation and distillation. Suitable solvents are methanol, benzene, chloroform, acetonitrile, n-hexane, methylethylketone, and, preferably, acetone.  Suitable complex formers comprise alkali metal chlorides, ammonium chloride, and/or amine hydrochlorides.  The process substantially avoids by-product formation.
Patent GB-1037179-A (GB)
Title: Improvements in or relating to blending apparatus
IPC: B01F13/10
Filed: 1962-12-20
Abstract: 1,037,179. Cutting foodstuffs. RONSON CORPORATION. Dec. 20, 1962 [Dec. 26, 1961], No. 48193/62. Heading A4C. [Also in Divisions B1 and F2] In a mixer and liquidiser comprising a bowl 12 in the base of which are disposed cutting blades 40 on a high speed shaft 34 and paddle blades 42 on a co-axial low speed shaft 36 (Fig. 4, not shown), the paddle blades may operate either alone or simultaneously with the blades 40. The blades 40 are in pairs 41, 49 (Fig. 6) of which the leading blade 41 is radially tilted upwardly from a boss 37, the blade 49 being horizontal. A cam 118 (Fig. 3, not shown) is normally in engagement with a lever 116 to compress a spring 108 and, by keeping high speed and input gears 64, 70 respectively apart, cause blades 42 to rotate alone. On rotation of the cam the spring is freed and brings gears 64, 70 into clutch contact. The upper portion 16 of the bowl tapers inwardly from bottom to top and is provided with a single axial fin and smaller axial ribs. A heating element 26 may be provided.
Patent GB-1059377-A (GB)
Title: Measurement of neutron current density
IPC: G01T3/00
Filed: 1963-12-09
Abstract: 1,059,377. Detecting neutrons. SIEMENSSCHUCKERTWERKE A.G. Dec. 9, 1963 [Dec. 7, 1962], No. 48577/63. Heading G6P. A neutron spectral distribution measuring device comprises a measuring probe within a detection chamber, one of the chamber walls being a plate of moderator material, the other walls being of neutron reflecting material, and the probe being air-spaced from the reflecting walls. The measuring probe may be a counting tube or an ionization chamber. The paraffin wax reflector 3 may be of circular or square cross-section; alternatively, it may be an inner layer of beryllium and two outer layers of polystyrene and/or polyethylene. The reflector shielding 3 may also be surrounded by shielding in the form of lead, and an absorber shell. The moderator plate 41 may be of polyethylene and it may be solid, or have holes as illustrated or extending only partially through it, or it may have blind annular grooves, the grooves or holes extending towards the sensitive area 21 of the probe, and being symmetrical about the plate polar axis. The materials, apertures and the shape of the device are such that the device functions as a neutron trap.
Patent GB-1388998-A (GB)
Title: Machine for processing tea leaf
IPC: A23F3/12
Filed: 1973-10-23
Abstract: 1388998 Tea processing machine TEA RESEARCH ASSOCIATION 23 Oct 1973 49271/ 73 Addition to 1274783 Heading A2B In a tea processing machine as set forth in Specification 1274783, the sleeve is fixed at the open end of the cylinder in a non-adjustable manner, the conical or frusto-conical attachment being enclosed therein, and there are additionally provided pressuriser plates' fitted to the attachment at the discharge end of the machine to adjust the intensity of processing of the tea leaves. Fig. 2 shows a sectional view of such a machine, being provided with a pressuriser plate at 7. This may be constituted by two relatively adjustable discs having cut-outs, as shown in Fig. 3.
Patent GB-1465700-A (GB)
Title: Surface active compositions
IPC: C09K23/00
Filed: 1974-11-21
Abstract: 1465700 Surfactant compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 21 Nov 1974 [24 Oct 1973] 49419/73 Heading C5D [Also in Divisions C3 and C2] Surface active compositions comprise a solution or dispersion in water or a halogenated solvent of one or more compounds of the general formula where Q is or is OR<SP>8</SP> where R<SP>8</SP>OH is a C 6 -C 14  alcohol which is obtainable by the OXO process, in which B is R<SP>5</SP> or H; R is an unsubstituted or substituted aliphatic hydrocarbon group; R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are H or alkyl groups; R<SP>5</SP> is an alkyl group; Z is Q or an amine, alkanolamine, thiol or alcohol residue, or is OM when M is a monovalent metal, NH 4 , or a quaternary ammonium group; and y is a whole number. The compounds included in the compositions may be prepared by first forming the group e.g. by reaction of water or an alcohol R<SP>5</SP>OH with ethylene and/or propylene oxide to produce This intermediate or the alcohol R<SP>8</SP>-OH may then be esterified under standard esterification conditions using a catalyst. Sufficient aliphatic dibasic acid or anhydride is used to form the half-ester (if 2 is to be the same as Q the proportion of dibasic acid or anhydride is reduced so as to form the di-ester). The second intermediate is then further reacted with a suitable derivative of 2, e.g. an alkali metal carbonate, an amine, alkanolamine, or alcohol so as to produce the compound for use in the composition. The above procedure may also be reversed so that the dibasic acid or anhydride is first reacted with the derivative of 2. Alternatively a lower alkyl ester of the dibasic acid may be used so that the basic reaction is a transesterification rather than an esterification.
Patent GB-495758-A (GB)
Abstract: 495,758. Ticket - issuing machines. DOEBELLI, A. Feb. 15, 1937, No. 4572. Convention date, Feb. 15, 1936. [Class 106 (iii)] A machine for issuing a preselected number of stamps, tickets, &c. of preselected value comprises a shaft 3 which is rotated through an angle determined by the particular key 1 depressed, corresponding to the number of stamps to be issued; the movement being transmitted through gearing to a shaft 11 and gearwheel 13, which is axially displaced on its shaft by the value-control lever 18 so as to mesh with one of a series of gear-wheels 9 connected by sleeves to drums 7 delivering the strips of stamps of different values. For each delivery the selector wheel 2 is rotated a complete revolution by hand or power, and is coupled by the depressed key 1 until the latter is released by striking a member 1<1>. A severing device 23 for the stamps is actuated at each delivery, and counters 27, 28, 29 indicate the number of each kind of ticket issued, the total value issued to one person, and the total of the day's values. Locking-catches ensure correct positioning of the moving parts. Specification 264,137, [Class 106 (iii)], is referred to.
Patent GB-1360799-A (GB)
Title: Radiant gasfired space-heaters
IPC: F24C3/00
Filed: 1971-09-17
Abstract: 1360799 Illuminating stoves; gas fires J F TREVOR 17 Sept 1971 [21 Oct 1970] 49936/70 Heading F4W A radiant gas-fired space heater has a baffle plate 19 of translucent or transparent material and means 22 for illuminating the radiant heating area 12. A tubular lamp 22 is arranged below the front of the radiants 12 and is shielded by baffle 19, and front casing 20, and a similar lamp 28 is arranged above the top of the radiants above a baffle 29. The baffles 19, 29 are of heat resisting glass or quartz and an air flow within the housing 20 cools the lamp 22. The baffles 19, 29 may have a reflective coating of metal so that infrared radiation from radiants 12 is screened from the lamps. The coating may be of gold, iron, nickel or cobalt, and is sufficiently thin to transmit visible light. The lamps may be coloured. The baffles 19, 29 are mounted by screws engaging elongated holes to allow for expansion, and may each be in several pieces.
Patent GB-1098910-A (GB)
Title: A method of grinding toothed wheels
IPC: B23F5/06
Filed: 1966-11-09
Abstract: 1,098,910. Gear-grinding. CARL HURTH MASCHINEN - UND ZAHNRADFABRIK. Nov. 9, 1966 [Dec. 7, 1965], No. 50187/66. Addition to 1,021,766. Heading B3K. In a method of grinding plain or helical gears as-claimed in Specification 1,021,766, the amount of metal removed during the grinding stroke from tip to root of a tooth is less than that removed in the opposite stroke. The machine has tapes 29a-29d acted upon by tensioning-cams 142a, 142b rocked in time with the work 25 as in Fig. 10 of the parent Specification. By suitably adjusting the stops 144, 145, the grinding wheel can be caused to remove all the metal on the stroke in the direction 202. The method prevents undesirable tip or root relief being caused by the impact of initial contact.
Patent GB-1081355-A (GB)
Title: Production of tetrahydrodicyclopentadienylene diamine
Inventor: RAFF PAUL
IPC: C08G59/50
Filed: 1965-12-18
Abstract: Tetrahydrodicyclopentadienylene diamine is prepared by reacting dicyclopentadiene with hydrocyanic acid and sulphuric acid in two stages, the first stage being carried out at - 5 DEG  to + 20 DEG  C. using 1 to 3 moles of sulphuric acid, while the second stage is carried out at a temperature of 0 DEG  to 30 DEG  C., such an amount of sulphuric acid being added that the total amount of sulphuric acid used is from 3 to 6 moles per mole of dicyclopentadiene, but at least one mole more than in the first stage, the reaction mixture then being hydrolysed and the diamine product being recovered by conventional methods.  The whole of the hydrocyanic acid may be present in the first stage. Both the temperature and the strength of the sulphuric acid in the first stage are preferably lower than those in the second stage.
Patent GB-1474582-A (GB)
Title: Hose rupture valve
IPC: F16K17/30
Filed: 1974-11-28
Abstract: 1474582 Valves LINDEN-ALIMAK AB 28 Nov 1974 [30 Nov 1973] 51603/74 Heading F2V A valve for a hose-line, to close in the event of a downstream loss of pressure, comprises a closure member 16, in the form of a perforated disc with an axially extending flange 20, is held away from a seat 26 by a helical spring 22. When pressure in an outlet 6 falls below a predetermined value the valve closes under the influence of the pressure drop across the closure member. This predetermined value is set by means of an adjustable throttle in the main flow path through the valve. The throttle comprises three inwardly projecting extensions 28 from a housing member 2 and three radial extensions 30 from a rotatable ring 14 which between them define three flow passages of variable crosssection through which fluid can pass between the housing and the closure member. The throttle may be adjusted by inserting a pin, through a slot in the housing, into a bore 36 in the ring.
Patent GB-1242064-A (GB)
Title: Improvements in stacking devices
Inventor: COOPER GORDON RICHARD
IPC: B65G57/00
Filed: 1967-11-15
Abstract: 1,242,064. Stacking tyres; roller conveyers. DUNLOP HOLDINGS Ltd. 6 Nov., 1968 [15 Nov., 1967], No. 51916/67. Headings B8A and B8C. Tyres fall one at a time from an upper conveyer 1 on to a post 4 to form a stack for inspection, the post being retracted downwardly when the stack comprises five tyres so that the stack can be moved by a lower conveyer 3. The stack forms on a slatted platform 2 which is held above the continuously driven rollers 13- 16 of the lower conveyer 3 by springs 25 and by lugs 36 on the post 4 until the stack is complete. The platform 2 is carried downwards as the post 4 is retracted (the slats 21, 22, 23 of the platform 2 passing between the rollers 13-16) to a position below the rollers 13-16, by a ring 31 on the post 4 engaging nuts 41 (only one shown) on rods 37 secured to the platform 2. The rollers 14 and 15 are each divided and the platform 2 is apertured to accommodate the post 4. The post 4 is moved by a pneumatic postion-cylinder assembly partly 27 within it and is guided by rods 24a, 24b, 24c (only two shown) ending in discs 33a &c. which limit the upward movement of the platform 2. A first photo-cell (not shown) at the side of the upper conveyer 1 detects each passing tyre or when the stack comprises five tyres and a first relay connected thereto operates when five tyres have passed, to stop the upper conveyer 1, to lower a pneumatically-operated gate 47 and to lower the post 4. A second photo-cell (not shown) at the side of the lower conveyer detects a passing stack and actuates a second relay to raise the post 4 and the gate 47, the post 4 thereby operating a limit switch (not shown) to restart the upper conveyer 1. In a modification, the second photo-cell or relay are omitted; the first relay raises the post 4 after a delay and the limit switch restarts the upper conveyer 1 and raises the gate 47.
Patent GB-1287226-A (GB)
Title: Apparatus for continuously casting metals
IPC: B22D11/10
Filed: 1970-11-04
Abstract: 1287226 Continuous casting NIPPON KOKAN KK 4 Nov 1970 [19 Nov 1969] 52452/70 Heading B3F Continuous casting apparatus comprises a mould 7, a tundish 1 and a coupling piece 6 secured to both the tundish and the mould. This connection is reinforced by metal pieces 9 supported on pedestals 10 which oscillate in a vertical direction and thus bring about oscillation of both the mould and the tundish. Cooling jackets 8 for the mould 7 are located between the members 9 and the mould.
Patent GB-1216140-A (GB)
Title: Rotating optical rectifying device for cinematographic apparatus
IPC: G03B41/02
Filed: 1968-11-06
Abstract: 1,216,140. Cinematography; optical compensators. BAIA CORP. Nov.6, 1968 [Dec.29, 1967] No. 52643/68. Headings G2A and G2E. [Also in Division H4]. An optical compensator system for use with continuously moving cine film, comprises a stationary cylindrical support member 30 upon which a hollow cup-shaped optical element 54, of transparent material such as acrylic resin rotates about the axis of member 30, the element having an inner cylindrical surface 82 and an outer cylindrical surface of multiple planar facets 84 through which the projection beam passes in turn. Support 30 also carries the projection lens 36 and corrector lens 38, with mirrors 32,34 by which light passing through film 80, moving in cylindrical surface 42 of member 30, is directed to the lens system. Element 54 is driven by the engagement of sprocket teeth 66 on its periphery with the film 80. The compensator system is shown in a rear projection film editor machine, a cassette-loading cine camera, and a television camera system for transmission from cine films.